What Causes Pain And Cramping In Lower Back Moving To Shoulders And Ribs?

I am having this problem for months. Initial, having lower back pain seems like sprain. The pain didn't go off but recurring in other areas in the body. At the middle back like back cramp, then left & right shoulder comes after right side - ribs. Move on to liver - left side rib. Some days couldn't stand up as my lower back is painful n abdomen also cramp - pulling inside. Went for X-ray, no problem with bones - alignment, gap, no dislocation, no purrs. Who can help me. Thanks Sparrow